Equivalent & Substitute Parts for RK73H1HTTC29R4F

Part Overview

The RK73H1HTTC29R4F is a 29.4 Ohm ±1% thick film chip resistor manufactured by KOA Speer Electronics, Inc., designed for 0.05W (1/20W) applications in the 0201 (0603 Metric) package format. This component is rated for automotive applications under AEC-Q200 and features moisture-resistant construction with an operating temperature range of -55°C to 155°C.

The RK73H1HTTC29R4F carries a product status of "Not For New Designs," indicating it has been superseded in the manufacturer's active product line. Identifying equivalent and substitute parts is necessary to ensure design continuity, maintain supply chain flexibility, and support ongoing production requirements for existing applications.

Substiute Parts

RK73H1HTTC29R4F

KOA Speer Electronics, Inc.In Stock: 1013RK73H1HTTC29R4F Datasheet

Current PartRFQ

RK73H1HTTCM29R4F

KOA Speer Electronics, Inc.In Stock: 858RK73H1HTTCM29R4F Datasheet

MFR RecommendedRFQ

AC0201FR-0729R4L

YAGEOIn Stock: 1026AC0201FR-0729R4L Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RK73H1HTTC29R4F are qualified based on strict electrical and mechanical parameter matching:

Substitution Criteria:

• Resistance value: 29.4 Ohms (exact match required)
• Tolerance: ±1% (exact match required)
• Power rating: 0.05W / 1/20W (exact match required)
• Package format: 0201 (0603 Metric) (exact match required)
• Composition: Thick Film (exact match required)
• Temperature coefficient: ±200ppm/°C (exact match required)
• Operating temperature range: -55°C to 155°C (exact match required)
• Automotive compliance: AEC-Q200 (exact match required)
• RoHS compliance: ROHS3 Compliant (exact match required)
• Moisture sensitivity: MSL 1 (exact match required)

Substitute parts are grouped into two categories: manufacturer-recommended equivalents from KOA Speer Electronics, Inc., and direct cross-reference alternatives from other qualified manufacturers meeting identical electrical and mechanical specifications.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: RK73H1HTTCM29R4F (KOA Speer Electronics, Inc.)

The RK73H1HTTCM29R4F is the manufacturer-recommended equivalent from KOA Speer Electronics, Inc. This part maintains active product status and carries identical electrical specifications, package format, and automotive AEC-Q200 compliance. The primary distinction is the absence of explicit moisture-resistant designation in the available documentation, though both parts share MSL 1 (Unlimited) rating. This part is suitable for direct substitution in applications where the original RK73H1HTTC29R4F is specified.

Secondary Substitute: AC0201FR-0729R4L (YAGEO)

The AC0201FR-0729R4L from YAGEO provides a cross-manufacturer alternative meeting all critical electrical and mechanical parameters. This part maintains active product status, includes moisture-resistant construction, and carries identical AEC-Q200 automotive certification. The AC0201FR-0729R4L is packaged in Tape & Reel format and is suitable for applications requiring multi-source component qualification or where YAGEO supply chain availability is preferred.

Both substitute parts satisfy the complete parameter set required for functional and mechanical compatibility with the original RK73H1HTTC29R4F specification.

Frequently Asked Questions (FAQ)

Q: Can RK73H1HTTCM29R4F be used as a direct replacement for RK73H1HTTC29R4F?

A: Yes. Both parts share identical resistance (29.4 Ohms), tolerance (±1%), power rating (0.05W), package format (0201), composition (thick film), temperature coefficient (±200ppm/°C), operating temperature range (-55°C to 155°C), AEC-Q200 automotive rating, RoHS3 compliance, and MSL 1 rating. The RK73H1HTTCM29R4F is the active product line equivalent.

Q: What is the difference between RK73H1HTTC29R4F and AC0201FR-0729R4L?

A: Both parts meet identical electrical and mechanical specifications. The primary differences are manufacturer (KOA vs. YAGEO) and product status (Not For New Designs vs. Active). The AC0201FR-0729R4L provides an alternative source for the same functional component.

Q: Are all three parts suitable for automotive applications?

A: Yes. All three parts carry AEC-Q200 automotive certification and operate across the -55°C to 155°C temperature range required for automotive environments.

Q: Does the absence of "moisture resistant" in RK73H1HTTCM29R4F documentation affect substitution?

A: Both RK73H1HTTC29R4F and RK73H1HTTCM29R4F carry MSL 1 (Unlimited) moisture sensitivity rating, indicating equivalent moisture handling capability. The RK73H1HTTCM29R4F is suitable for applications requiring moisture resistance.

Q: Can these parts be used interchangeably in production?

A: Yes, provided your design documentation and supply chain qualification process permit multi-source components. All three parts meet identical electrical specifications, package format, and automotive compliance requirements.

Q: What packaging formats are available?

A: RK73H1HTTC29R4F and AC0201FR-0729R4L are supplied in Tape & Reel (TR) format. RK73H1HTTCM29R4F packaging format is not specified in available documentation; verify with supplier before procurement.